ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC%28C%29%28O%29%5BC%40%40H%5D1Cc2cc3C%3DCC%28%3DO%29Oc3cc2O1/file?format=sdf&get3d=True  -- CC%28C%29%28O%29%5BC%40%40H%5D1Cc2cc3C%3DCC%28%3DO%29Oc3cc2O1 could not be loaded.